Eddie Davis, and Bill and Donnie Hayes. the "elder" Redlegs is still going too, and is the mid central FMDAC president last I knew.
They are still sponsored by Fisher too. Ed is an absolute wonder, and can suck the coins out of the ground like no other.
He HAS been beaten..........but thats more the exception than the rule.
We (Linda and I) have done a LOT of comp hunting over the years, but not so much the last couple of years.(more into relic hunting now) Linda is arguably one of the best female comp hunters pretty much anywhere, and has beat a couple of the red legs scores more than once.
Shes not only one of the best chicks, but better than a LOT of guys out there!

Your F70 will handle comp hunting very very well. Even turned down to the minimum settings, it will get most any target your apt to want to dig at these hunts. Depth is NOT an issue at comp hunts. Recovery speed, and the ability to get coins on edge IS.
There IS a deep hunt at Treasure week, but its not like that average comp hunt. In fact, all the Red legs stomped the competition in the deep hunt with their F75's this year! (Not surprised)
Prior to the F75, my buddy (Ron Falk) pretty much dominated the comp with his exploder, with a few of us others getting the rest of the top 5 slots. Gary Manning used to kill everyone there with an OLD tesoro years ago.
You may want to chek out the indiana Treasure fest held every year now in southern Indiana. We were there last year and had a great time. I won a 25 ounce bar of silver on the first day there. Pretty much paid for the hunt! If you want the contact info for it let me know and I can email it to you.
Use the F70 and have a blast. Its a good machine for comps! you'll do GREAT with it! Streak!